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Electro-Pneumatic Positioner SP 520 Series
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Ver 1.20
36
SHIN HWA Eng.Co.,Ltd.
5. Connection
– Power
5-1 Safety
Caution
▶
Please check whether power is off before connecting terminal.
▶
Supply the lower than regulated current and voltage.
▶
Do not install cable on near equipments incurred by noises such as high capacity transformer
or motor.
▶
Please discriminate intrinsic safety and non-intrinsic wire, and separate intrinsic wire from
other electronic wire.
▶
It should be proper protection device so that static and electromagnetic may not be taken
influenced
▶
Please do grounding so that it may be met regulation in relative explosion area
• Flame Explosion proof type cable and packing union must be used in danger area such as
explosive gas zone and in case of using electric cable, gasket and shield should be used and
they must be sealed completely. In case of using flame explosion proof packing union, it is
required to select inside rubber packing size properly which meets on cable outside size.
• While power is on, do not open cover which is connected with parts such as PCB etc.
• Before opening cover, make sure that power is shut down and voltage must not be remained
completely and after checking it, open the cover.
5-2 Cable grand terminal connection for Flame Explosion proof .
- When connecting to power supply with using cable grand for flame explosion proof (Ex db mb),
Please use items only which obtained approval for flame explosion proof (Ex db mb) suitable
to explosion proof condition in site .
- The inner rubber packing size must be selected according to the outer diameter of the cable.